Bumping this thread as it has gone a bit stale, given that Unity, XCode and iOS have progressed . . . wondering if anyone knows of any build optimization tips that might be helpful. I'm submitting an app in approx. two weeks, and any final optimization tweaks would be gladly welcomed.

What exactly in this thread is at stale? Publishing to IOS works well, if you have trouble don't hesitate to create a dedicated post with your issue and ping me after few days if you haven't got any replies

as for optimization tips, prefer using custom actions over actions such as "SetProperty", "GetProperty","InvokeMethod", etc they use reflection and could be a bottleneck if your game is already reaching limits in terms of graphics and shaders. Apart from that, refer to Unity own tips really, there isn't much within PlayMaker for optimizing, the real deal is to profile oftento detect perfs issues as soon as possible, else it's a nightmare... with or without PlayMaker